Friedrich bosse



(No Model.)

P. BOSSE. APPARATUS FOR POLISHING AND SHARPENING KNIVES, FORKS, 8:0.

N0. 479,114. Patented July 19, 1892.

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ms "cums PETERS 20., PHOTO-1140,, wAsummun, a. c.

UN STATES I FRIEDRICH BOSSE, OF BERLIN, GERMANY.

APPARATUS FOR POLISHING AND SHARPENING KNIVES, FORKS, &c.

SPECIFICATION forming part of Letters Patent No. 479,114, dated July 19, 1892.

Application filed October 16, 1891-, Serial No. 408,935. (No model.)

To all'whom it may concern.-

Be it known that I, FRIEDRICH Bossn, of Berlin, in the Kingdom of Prussia and German Empire, have invented new and useful Apparatus for Polishing Knives, Forks, and the Like, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to apparatus for polishing knives, forks, and the like. known that in large householdssuch as hotels, &c.the daily cleaning of knives and forks consumes a considerable amount of time. Machines therefore have been constructed so that the cleaning could be effected thereby and more quickly than heretofore.

In the accompanying drawings, Figures I, II, and III illustrate my improved machine, Fig. I being a side elevation of the general arrangement of the machine, Figs. II and III showing details drawn on an enlarged scale, showing the fork-cleaner and knife-cleaner, respectively.

Upon the shaft w, mounted upon the blocks or supports 1) b, is arranged on the left side the fork-cleaning apparatus g, which consists, essentially, of the rotary brush '1", Fig. 2. This brush '1" is provided inwardly with a cavity 72, which is closed atthe side by a cover-plate d. This cavity has for its object to store cleaning-powder. When the brush is rotated, the cleaning mass passes through small holes 19, formed in the upper wall of the brush, in order to be distributed in this manner upon the brushes, so that the forks within the latter may be polished all over, as well as between their prongs. It is sufficient to pull the forks through once in order to thoroughly clean the same. The powder is filled in from outside through an opening 0, which is closed by means of a screw 8.

Upon the right-hand end of the shaft 10 is arranged the knife-cleaning machine m, consisting of two disk-like parts a and c, Fig. 3. The disk a is firmly keyed upon the shaft, while the disk 0 is loosely mounted upon the same, so that it can be shifted laterally thereon. Upon the inner side of the two disks a and c are fixed india-rubber disks 7 and g,

It is well respectively. These india-rubber disks are rounded on their upper edges and furnished with pumice-stone, and therefore possess a very great polishing power.

The disk 0, as well as the india-rubber disk 9, are controlled by a spiral spring f, which is fixed to the shaft and has a tendency to bear against the disk 71 as soon as a knife is inserted between the two disksian'd g, which insertion is facilitated by the rounding of the upper edges of the disks 4. and g, when they are somewhat separated, the spiral spring f, however, causing them to be firmly pressed against the surfaces of the knife.

The supply of cleaning material or powder for the disks 2 and g is effected in the same manner as for the fork-cleaning machine aforesaid. For this purpose the disksac are furnished with a recess, wherein a box e is located. The latter is furnished upon its periphery with holes .2 and is fixed in the disk 0, while extending within the cavity of the disk a, which is filled with cleaning-powder from outside by means of an opening n. WVhen a knife is inserted between the two disks c'and g, cleaning-powder passes in consequence of the cleft thus formed and through the openings .2 of the box-wall. The powder issuing in this manner is distributed over the india-rubber disks iand g. In this case it is usually sufficient to draw the knife once along the disk in order to clean andv polish it. One of these two contrivances may be removed and replaced by a sharpening-stone, which is fixed upon the shaft to and serves to sharpen the knives when required.

The machine may be driven by hand or by treadle, which latter would be the more appropriate means, as, the two hands being free, a knife and a fork could be simultaneously cleaned.

This machine fully answers all the requirements that can fairly be expected from a knife and fork cleaning machine.

What I claim, and desire-to secure by Letters Patent of the United States, is

1. In a knife-cleaner, the combination, with the shaft, of a disk keyed to said shaft, another disk loosely mounted and sliding on said shaft, a spring mounted on the shaft and bearing against said disk, the india-rubber disk mounted on the adjacent edges of the disks, recesses in the adjacent sides of the disk, and a perforated box fitting said recesses and containing the polishing material, substantially as described.

2. A knife and fork cleaner comprising a shaft having mounted upon one end a hollow disk having orifices in its periphery and brushes arranged thereon and having on its other end a disk keyed to said shaft, another. disk loosely mounted and sliding on said shaft,

a spring mounted on the shaft and bearing against said disk, india-rubber rings mounted on the adjacent edges of the disk, recesses in the adjacent sides of the disk, and a perforated loox fitting said recesses, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

FRIEDRICH BOSSE. Witnesses:

PAUL FISCHER, \VILI-IELM SCI-IWIE'lI-IAL. 

